WILLIAM NATION/ELIZABETH VEST

I AM LOOKING FOR MORE INFORMATION ON WILLIAM NATION/ELIZABETH VESTMARRIED NOV 26, 1804 IN HENRY CO KY. COULD THEY HAVE POSSIBALBY MOVED TO SCOTT CO INDIANA-SHOWS A WILLIAM IN 1820 CENSUS SCOTT CO INMY GGRANDFATHER WAS BORN 1822 SCOTT CO IN. HIS NAME WAS WILLIAM EVERMONT NATION. HAVE BEEN SEARCHNG SINCE 1979 FOR HIS PARENTSCAN ANYONE HELP????? THANKS NANCY NATION